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Praktiflex
''Kamera-Werkstätten Guthe & Thorsch'' (K.W.) was established 1919〔KW active 1919 according to company WEB-page 04.28.2012: http://www.kwdo.de/deutsch/unternehmen/frameset.htm〕 in Dresden by Paul Guthe and Benno Thorsch, starting out manufacturing the ''Patent Etui'' plate camera. Ten years later came the roll film TLR ''Pilot Reflex'' and in 1936, the 6×6 SLR ''Pilot'' range. By that time, Benno Thorsch, the surviving partner from 1919, decided to immigrate to the USA and arranged with the US citizen Charles Noble to swap enterprises. Noble came to Germany and moved the factory to Niedersedlitz on the outskirts of Dresden, while Benno Thorsch in Detroit ran the acquired photo finishing business that was one of the largest in the USA.〔John H. Noble〕 The new ''Kamera-Werkstätten AG, Niedersedlitz'' prospered, and in 1939 launched the 35mm SLR ''Praktiflex'' camera. The concept proved successful, and through continuous development, the ''Praktica'' name became one of the most popular 35mm SLR brands for several decades, beginning in the 1950s.
== The Camera ==
The Praktiflex 35mm SLR film camera was launched in 1939〔 by the Kamera-Werkstätten AG, Dresden-Niedersedlitz.
Despite being quite crude, the design constitutes the pattern along which virtually every subsequent 35mm SLR camera is built, regardless of place of origin. The highly regarded 35mm SLR Kine Exakta, by Ihagee in Dresden, that preceded it by some three years, is extremely complicated by comparison, and although it provides the same functions, is quite differently built. The Praktiflex has a 40mm screw lens mount, while the later Praktica models, after World War II when the factory was part of the VEB Pentacon, uses the 42mm screw mount.〔 The Praktiflex has one feature inherited from the large format plate SLR cameras that otherwise was unsolved in the 35mm SLR cameras until 1954; the instant return mirror is lifted by the power of the finger depressing the shutter release, and it returns when the finger pressure is released. The button, with a rather long travel, is placed at the right-hand camera top plate. The slanted script is embossed in the name plate in front of the collapsible waist-level finder.
The principal designers were presumably Benno Thorsch and Charles A. Noble.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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